On Sat, 18 Aug 2007 12:51:46 GMT, "Randy Zimmerman"
wrote:

I am looking for a listing or description on a quick way to clamp down
material using tee nuts and threaded rods. I need a quick way to take up
slack.
I have seen pictures years ago but don't know what they are called. They
are like a coupling nut with the upper half having thread on half the
diameter then on the lower part there are threads on the opposite side of
the inside diameter. When loosened one can tip the nut over and it slides
off the threaded rod.
Anyone made them or... know a source?? ( 5/8 UNC)

Carr-Lane makes knobs like that up to 1/2-13.

Northwestern has 5/8-11 inserts.
http://www.northwesterntools.com/insrt_qck.html

I thought I've seen hex nuts as well, but can't find them now. Both
Carr-Lane and Northwestern call the feature "quick-acting".

--
Ned Simmons